pentachlorophenyl ester of L-pyroglutamic acid, L-pentachlorophenyl pyroglutamate, L-Pyroglutamic acid pentachlorophenyl ester, Perchlorophenyl 5-oxo-L-prolinate, pyroglutamic acid pentachlorophenyl ester, L-Proline,5-oxo-,pentachlorophenyl ester, pentachlorophenyl L-pyroglutamate, EINECS 249-360-2